| 1 |
On 08/26/2014 05:23 AM, Marcin Mirosław wrote: |
| 2 |
> Hello! |
| 3 |
> I suspect that I've got problem with hardened-sources in KVM VM. I'm not |
| 4 |
> sure if I should fill a bug for this. I'd like to post it here before |
| 5 |
> using b.g.o. |
| 6 |
> I've got VM (it's KVM with qemu-2.0.0-r1), with |
| 7 |
> hardened-sources-3.15.{5-r2,8}. I'm observing a kind of memory |
| 8 |
> corruption. After a couple of hours of uptime I'm starting seeing random |
| 9 |
> segfaults, general protection traps especially when process uses a lot |
| 10 |
> of CPU and do many I/O operations (masscheck scripts written in perl for |
| 11 |
> spamassasin rules). |
| 12 |
> In log I've got e.g.: |
| 13 |
> |
| 14 |
> 2014-08-25T13:05:23.243062+02:00 mohikanin kernel: [45571.239703] PAX: |
| 15 |
> From 88.198.102.195: execution attempt in: (null), 00000000-00000000 |
| 16 |
> 00000000 |
| 17 |
> 2014-08-25T13:05:23.243088+02:00 mohikanin kernel: [45571.239707] PAX: |
| 18 |
> terminating task: /usr/libexec/dovecot/pop3-login(pop3-login):2507, |
| 19 |
> uid/euid: 105/105, PC: (nil), SP: 000003a8574e4c00 |
| 20 |
> 2014-08-25T13:05:23.243093+02:00 mohikanin kernel: [45571.239709] PAX: |
| 21 |
> bytes at PC: ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? ?? |
| 22 |
> 2014-08-25T13:05:23.243095+02:00 mohikanin kernel: [45571.239735] PAX: |
| 23 |
> bytes at SP-8: 0000000000000000 0000000000000000 00000059c6deceb0 |
| 24 |
> 0000000000000000 00000316027bc540 0000000000000001 000003160271dbb5 |
| 25 |
> 0000000000000000 0000000000000000 0000000000000000 0000000000000000 |
| 26 |
> 2014-08-25T13:24:42.943001+02:00 mohikanin kernel: [46730.931353] traps: |
| 27 |
> spamd child[19681] general protection ip:2c572b6e163 sp:3ca7d000be0 |
| 28 |
> error:0 in libc-2.19.so[2c572aee000+19e000] |
| 29 |
> 2014-08-25T13:24:42.943007+02:00 mohikanin kernel: [46730.931371] grsec: |
| 30 |
> Segmentation fault occurred at (nil) in /usr/sbin/spamd[spamd |
| 31 |
> child:19681] uid/euid:999/999 gid/egid:100/100, parent |
| 32 |
> /usr/sbin/spamd[/usr/sbin/spamd:1255] uid/euid:0/0 gid/egid:0/0 |
| 33 |
> 2014-08-25T13:55:22.383032+02:00 mohikanin kernel: [48570.375917] traps: |
| 34 |
> freshclam[6594] general protection ip:344cceb368d sp:3d5f5ced520 error:0 |
| 35 |
> in libclamav.so.6.1.23[344ccdf1000+9d1000] |
| 36 |
> 2014-08-25T13:55:22.383050+02:00 mohikanin kernel: [48570.375968] grsec: |
| 37 |
> Segmentation fault occurred at (nil) in |
| 38 |
> /usr/bin/freshclam[freshclam:6594] uid/euid:104/104 gid/egid:115/115, |
| 39 |
> parent /usr/bin/freshclam[freshclam:1159] uid/euid:104/104 gid/egid:115/115 |
| 40 |
> |
| 41 |
> Yesterday I switched kernel to gentoo-sources-3.14.14 and I don't see |
| 42 |
> any unwanted behavior. This is why I suspect hardened-sources. Should I |
| 43 |
> fill a bug? What should I do help find out the root of problem? |
| 44 |
> (gcc is: gcc version 4.7.3 (Gentoo Hardened 4.7.3-r1 p1.4, pie-0.5.5) , |
| 45 |
> with ld.gold) |
| 46 |
> |
| 47 |
> Marcin |
| 48 |
> |
| 49 |
|
| 50 |
I'll test a 3.15.10-r1 kernel today sometime, anything I can do to |
| 51 |
reproduce specifically? |
| 52 |
|
| 53 |
|
| 54 |
-- |
| 55 |
-- Matthew Thode (prometheanfire) |
Archives